### Abstract

This paper focuses on reactive biogeochemical modeling issues and data needs. We show that (1) the minimum number of kinetic data needs is equal to the number of linearly independent kinetic reactions; (2) kinetic reactions that are linearly dependent on only equilibrium reactions are irrelevant; (3) a kinetic reaction that is linearly independent of other kinetic reactions can be analyzed based on one curve of kinetic-variable concentration-vs-time; and (4) kinetic reactions that are linearly dependent on each other can not be uniquely segregated for kinetic analyses. A simple example of biogeochemical reactive systems is used to illustrate the idea of assessing system consistency and minimum data needs for reaction-based modeling. This example considers the bioreduction of ferric oxide. It highlights the need for simple 'model' systems to study biogeochemical reactions because the inclusion of additional species will involve several more reactions and usually always increase the minimum number of species concentrations that must be measured.

Original language | English (US) |
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Title of host publication | Computational methods in water resources - Volume 1 - Computational methods for subsurface flow and transport |

Editors | L.R. Bentley, J.F. Sykes, C.A. Brebbia, W.G. Gray, G.F. Pinder, L.R. Bentley, J.F. Sykes, C.A. Brebbia, W.G. Gray, G.F. Pinder |

Publisher | A.A.Balkema |

Pages | 435-442 |

Number of pages | 8 |

ISBN (Print) | 9058091244 |

State | Published - Jan 1 2000 |

Event | Computational Methods in Water Resources XIII - Calgary, Canada Duration: Jun 25 2000 → Jun 29 2000 |

### Other

Other | Computational Methods in Water Resources XIII |
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Country | Canada |

City | Calgary |

Period | 6/25/00 → 6/29/00 |

### Fingerprint

### All Science Journal Classification (ASJC) codes

- Earth and Planetary Sciences(all)
- Engineering(all)
- Environmental Science(all)

### Cite this

*Computational methods in water resources - Volume 1 - Computational methods for subsurface flow and transport*(pp. 435-442). A.A.Balkema.

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*Computational methods in water resources - Volume 1 - Computational methods for subsurface flow and transport.*A.A.Balkema, pp. 435-442, Computational Methods in Water Resources XIII, Calgary, Canada, 6/25/00.

**Modeling biogeochemical kinetics : Issues and data needs.** / Yeh, G. T.; Burgos, William D.; Fang, Y. L.; Zachara, J. M.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Modeling biogeochemical kinetics

T2 - Issues and data needs

AU - Yeh, G. T.

AU - Burgos, William D.

AU - Fang, Y. L.

AU - Zachara, J. M.

PY - 2000/1/1

Y1 - 2000/1/1

N2 - This paper focuses on reactive biogeochemical modeling issues and data needs. We show that (1) the minimum number of kinetic data needs is equal to the number of linearly independent kinetic reactions; (2) kinetic reactions that are linearly dependent on only equilibrium reactions are irrelevant; (3) a kinetic reaction that is linearly independent of other kinetic reactions can be analyzed based on one curve of kinetic-variable concentration-vs-time; and (4) kinetic reactions that are linearly dependent on each other can not be uniquely segregated for kinetic analyses. A simple example of biogeochemical reactive systems is used to illustrate the idea of assessing system consistency and minimum data needs for reaction-based modeling. This example considers the bioreduction of ferric oxide. It highlights the need for simple 'model' systems to study biogeochemical reactions because the inclusion of additional species will involve several more reactions and usually always increase the minimum number of species concentrations that must be measured.

AB - This paper focuses on reactive biogeochemical modeling issues and data needs. We show that (1) the minimum number of kinetic data needs is equal to the number of linearly independent kinetic reactions; (2) kinetic reactions that are linearly dependent on only equilibrium reactions are irrelevant; (3) a kinetic reaction that is linearly independent of other kinetic reactions can be analyzed based on one curve of kinetic-variable concentration-vs-time; and (4) kinetic reactions that are linearly dependent on each other can not be uniquely segregated for kinetic analyses. A simple example of biogeochemical reactive systems is used to illustrate the idea of assessing system consistency and minimum data needs for reaction-based modeling. This example considers the bioreduction of ferric oxide. It highlights the need for simple 'model' systems to study biogeochemical reactions because the inclusion of additional species will involve several more reactions and usually always increase the minimum number of species concentrations that must be measured.

UR - http://www.scopus.com/inward/record.url?scp=0033673646&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033673646&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:0033673646

SN - 9058091244

SP - 435

EP - 442

BT - Computational methods in water resources - Volume 1 - Computational methods for subsurface flow and transport

A2 - Bentley, L.R.

A2 - Sykes, J.F.

A2 - Brebbia, C.A.

A2 - Gray, W.G.

A2 - Pinder, G.F.

A2 - Bentley, L.R.

A2 - Sykes, J.F.

A2 - Brebbia, C.A.

A2 - Gray, W.G.

A2 - Pinder, G.F.

PB - A.A.Balkema

ER -